In other words, 911 kilometers per hour is 0.0000008441024740 times the speed of The Speed of Light, and the speed of The Speed of Light is 1,184,690.280 times that amount.

(C) (in a vacuum)The speed of light (and all other electromagnetic radiation) in a perfect vacuum is known as "c" and measures exactly 1,079,252,850 kilometers per hour, per the formal definition of the meter. While visible light travels close to this speed in air, it slows to 719,501,899 kilometers per hour when passing through the glass of a typical window.

In other words, the speed of a Meteor is 170 times 911 kilometers per hour.

(formally Meteoroid or meteorite, depending on the context; a.k.a. "shooting star", a.k.a. "falling star")Small meteoroids enter the Earth's atmosphere at speeds between 40,000 kph and 260,000 kph, depending on their size. The fireball effect, known as ablation, ceases once the atmosphere has slowed the meteoroid to a velocity of about 10,000 kph.

In other words, 911 kilometers per hour is 0.2770 times the speed of a Bullet (Rifle), and the speed of a Bullet (Rifle) is 3.610 times that amount.

(5.56 x 45 mm, a.k.a. 5.56 NATO)A 5.56 x 45 mm cartridge is fired at a velocity of 3,294 kph. As the NATO rifle cartridge, it is used by the military forces of more than thirty-one countries, including use in the M16 series, M4 Carbine, HK-416, and M249 Squad automatic weapons used by the United States armed forces.